Music-leaf turner.



No. 64l,704. Patent ed Jan. 23, I900.

K. N. KNUDTSON.

MUSIC LEAF TURNER.

(Application filed May 6, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

KNUDT N. KNUDTSON, OF BEAVER CREEK, MINNESOTA, ASSIGNOR TO LAURA KNUDTSON, OF SAME PLACE.

MUSIC-LEAF TURNER.

SPECIFICATION forming part of Letters Fatent No. 641,704, dated January 23, 1900.

Application filed May 6, 1899. Serial No. 715,815. (No model.)

To all whom, it may concern.-

Be it known that I, KNUDT N. KNUDTSON, a citizen of the United States of America, residing at Beaver Creek, in the county of Rock and State of Minnesota, have invented certain new and useful Improvements in Music- Leaf Turners; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to music-leaf turners, and is designed primarily as an article of manufacture adapted to be readily employed upon any of the ordinary music-stands or piano-rests.

An object of the invention is to provide a construction of holder wherein by apeculiar arrangement of cords and connecting devices the user can readily turn a single leaf either to the right or left, or he may turn several leaves at a time, according to the place desired to be exposed before him.

With such object in view the invention embraces the parts and combinations of parts to be hereinafter described, and definitely pointed out in the claim.

In the accompanying drawings, wherein an embodiment of the idea is shown for the purpose of illustration, like letters of reference designate corresponding parts in the several views.

Figure 1 is a plan view of the device, the turning-arms being shown in one position by full lines and in the opposite position by dotted lines. Fig. 2 is a perspective View of one of the arms. Fig. 3 is a detail sectional view showing the manner of passing the operatingcords through the back plate, and Fig. 4 is a cross-section on the line 00 m of Fig. 1.

Referring to the drawings, A represents the back plate, preferably substantially rectangular in shape. In the present instance this plate is shown of plain materialwood,metal, orthe like; but, if desired, it may be made of open-work material for lightness or pleasing configuration. The plate is designed to rest upon the music-supportingledge of a piano or stand and is provided with the projecting flange a on the face thereof to itself support the music.

Adapted to slide in guides B on the back of the plate A are strips E of anysuitable number, three being conveniently shown, and across the tops of these strips is secured integrally or otherwise a connecting-bar 0, above which extends the portion ct. That the bar and strips maybe adjusted to desired height-s relative to the ledge a the intermediate strip is provided with an elongated slot 0, through which projects a pin 0, screw-threaded at its outer or rear end and engaged by the thumb nut c, which is adapted to clamp the strip and plate together.

Eyelets cZ project from the face of the central strip E and loosely support a pivot-pin D. Pivotally' secured at their inner ends to the pin D are the turning-arms F, comprising the horizontal portions f and the vertical portions f. There may be any desired number of these arms employed, and the only difference between them is that they gradually decrease in size from the outer to the inner. At the ends of the vertical portions of the arms are spring-clasps G of any desired style for attachment to the upper edges of the leaves.

The means for throwing the turning-arms from right to left may now be described.

Equidistant apart upon each side of the bar 0 are a number of pivoted blocks h, corresponding in number with the arms F and carrying at their free ends small pulleys h h. I

The blocks on both sides normally turn to ward the center of the bar. Operating-cords H H, preferably of wire or chain, are securely fastened to the respective sides of the horizontal portions of the turning-arms, at approximately the center thereof, and extend over the pulleys h h, as clearly shown in the drawings. From the pulleys the cords pass directly downward in rear of the plate A to the openings ct, through which they pass below the ledge a and hang within easy reach of the operator. Rings K are suspended from the ends of the cords and perform the double function of affording a grip while pulling upon the cords and also to keep the cords from accidentally slipping through the openings a.

The operation will be obvious. By drawing upon any one of the cords at either side the arm connected to such cord will be swung upon its pivot in the direction of the pull and through the medium of its clasp carry with it the leaf, thereby turning the same.

Should occasion arise when a comparatively small sheet or book is to be used and the ledge a be too loW down to support the same at sufficient height to be engaged by the spring-clasp, I have provided a series or" perforations L, properly spaced apart, which are adapted to receive supporting-pins M, sus pended from the plate A by cords m.

Elongated rods N are pivotally attached at n to the ends of the outside strips E and are bent at n, so as to be readily turned over upon the face of a sheet or away from engagement therewith, the two positions beingindicated in Fig. 1. These rods are to be used when desired to retain in fiat position the pages or sheets which are on the opposite side to those held in place by the turningarms. NVhen bearing upon the sheet or page, the rods extend in a slanting direction, as shown, sothat anycurling or accidental turning of the page is avoided.

Having thus described the invention, what is claimed as new, and desired to be secured by Letters Patent, is-

A music-leaf turner, comprising a back plate having guide-apertures near its lower end, a ledge on the back plate slightly above the apertures turning-arms pivoted to the back plate, oppositely-arranged operatingcords for the turning-arms, pulleys arranged in substantially vertical alinement with the apertures in the back plate over which the respective cords pass and extend downwardly in rear of the back plate and through the guide-apertures below the ledge, and means at the ends of the cords constituting grips and retainingstops to prevent accidental withdrawal of the cords through the apertures, substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

KNUDT N. KNUDTSON.

Witnesses:

I. S. Woonnow, T. E. JONES. 

